Angle-Resolved PhotoElectron Spectroscopy (ARPES)

After a few-decade-long development, ARPES has become an indispensable tool to study variety of quantum materials. We focus on laser-based ARPES which is applied to both bulk and epitaxially grown thin films to directly image electronic states in momentum space.

Light-Matter Interaction

We study light-matter interaction on the nanoscale by using atomically-thin materials. In particular, we are interested in light-induced coherent drive of phonons which could couple to other degrees of freedom, and advanced quantum effects in a non-linear optical process such as second harmonic generation. Ultrafast lasers will be the primal tool to study those phenomena.